National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat Wave Continues; Enhanced Area of Severe Thunderstorms Today

A prolonged, dangerous heat wave will continue today in the Midwest and Mississippi Valley, and persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Widespread moderate to extreme HeatRisk is forecast. Scattered wind damage and large hail are expected from severe thunderstorms impacting parts of Nebraska into Iowa today. Read More >

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

84°F

29°C

Humidity 70%
Wind Speed SW 13 mph
Barometer 29.93 in (1013.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 3 Jul 10:56 am EDT
Extended Forecast for

Essex CT

Extreme Heat Warning July 3, 11:51am until July 4, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 3, 11:51am until July 4, 09:00pm

    NOW until 9:00pm Sat

    Extreme Heat Warning

  • Today

    High: 100 °F

    Hot

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before midnight. Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Chance
    Showers

  • Independence Day

    Independence Day: A 30 percent chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 97. Heat index values as high as 106. Calm wind becoming west 5 to 8 mph in the morning.

    High: 97 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms, then a chance of showers after midnight. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.

    Low: 69 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 89. Light and variable wind. Chance of precipitation is 30%.

    High: 89 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    Showers

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny and hot, with a high near 100. Heat index values as high as 111. West wind around 7 mph.
Tonight
A 30 percent chance of showers, mainly before midnight. Partly cloudy, with a low around 74. Calm wind.
Independence Day
A 30 percent chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 97. Heat index values as high as 106. Calm wind becoming west 5 to 8 mph in the morning.
Saturday Night
A slight chance of showers and thunderstorms, then a chance of showers after midnight. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.
Sunday
A slight chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 89. Light and variable wind. Chance of precipitation is 30%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 64.
Monday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 63.
Wednesday
Partly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Essex CT
 41.36°N 72.37°W (Elev. 7 ft)
Last Update:
5:22 am EDT Jul 3, 2026
Forecast Valid:
11am EDT Jul 3, 2026-6pm EDT Jul 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation